Synthesis and characterization of a novel mesoporous Mn - organophosphate molecular sieve

Detalhes bibliográficos
Autor(a) principal: Narayanan,Venkatathri
Data de Publicação: 2009
Outros Autores: Daniel,Santhanaraj, Kannan,Shanthi
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392009000400006
Resumo: A novel mesoporous Mn - organophosphate was synthesized for the first time. It is characterized by several physicochemical techniques. Small angle X-ray diffraction analysis shows the first peak in 2.5ºwith 39 Aº pore width. Elemental analysis shows that the composition is [(C12H23N)3PO]40Mn. Scanning electron microscopic picture shows the flag morphology with 1-15 µm particle size. Thermogravimetry/Differentaial thermal analysis shows almost 80% exothermic weight loss. Nitrogen adsorption isotherm shows type III with 300 m²/g BET surface area. Fourier transform Infrared spectroscopic analysis shows that the framework vibrations are comparable to other well known silica mesoporous materials. Electron spin resonance spectroscopic analysis shows the absence of hyperfine splitting indicates the presence of Mn3+ species. Ultraviolet - visible spectroscopic analysis shows that most of the Mn is in tetrahedral co-ordination beside small square pyramidal species. A plausible synthesis mechanism also proposed.
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spelling Synthesis and characterization of a novel mesoporous Mn - organophosphate molecular sievemesoporousMn - organophosphatecharacterizationA novel mesoporous Mn - organophosphate was synthesized for the first time. It is characterized by several physicochemical techniques. Small angle X-ray diffraction analysis shows the first peak in 2.5ºwith 39 Aº pore width. Elemental analysis shows that the composition is [(C12H23N)3PO]40Mn. Scanning electron microscopic picture shows the flag morphology with 1-15 µm particle size. Thermogravimetry/Differentaial thermal analysis shows almost 80% exothermic weight loss. Nitrogen adsorption isotherm shows type III with 300 m²/g BET surface area. Fourier transform Infrared spectroscopic analysis shows that the framework vibrations are comparable to other well known silica mesoporous materials. Electron spin resonance spectroscopic analysis shows the absence of hyperfine splitting indicates the presence of Mn3+ species. Ultraviolet - visible spectroscopic analysis shows that most of the Mn is in tetrahedral co-ordination beside small square pyramidal species. A plausible synthesis mechanism also proposed.ABM, ABC, ABPol2009-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392009000400006Materials Research v.12 n.4 2009reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392009000400006info:eu-repo/semantics/openAccessNarayanan,VenkatathriDaniel,SanthanarajKannan,Shanthieng2010-01-19T00:00:00Zoai:scielo:S1516-14392009000400006Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2010-01-19T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Synthesis and characterization of a novel mesoporous Mn - organophosphate molecular sieve
title Synthesis and characterization of a novel mesoporous Mn - organophosphate molecular sieve
spellingShingle Synthesis and characterization of a novel mesoporous Mn - organophosphate molecular sieve
Narayanan,Venkatathri
mesoporous
Mn - organophosphate
characterization
title_short Synthesis and characterization of a novel mesoporous Mn - organophosphate molecular sieve
title_full Synthesis and characterization of a novel mesoporous Mn - organophosphate molecular sieve
title_fullStr Synthesis and characterization of a novel mesoporous Mn - organophosphate molecular sieve
title_full_unstemmed Synthesis and characterization of a novel mesoporous Mn - organophosphate molecular sieve
title_sort Synthesis and characterization of a novel mesoporous Mn - organophosphate molecular sieve
author Narayanan,Venkatathri
author_facet Narayanan,Venkatathri
Daniel,Santhanaraj
Kannan,Shanthi
author_role author
author2 Daniel,Santhanaraj
Kannan,Shanthi
author2_role author
author
dc.contributor.author.fl_str_mv Narayanan,Venkatathri
Daniel,Santhanaraj
Kannan,Shanthi
dc.subject.por.fl_str_mv mesoporous
Mn - organophosphate
characterization
topic mesoporous
Mn - organophosphate
characterization
description A novel mesoporous Mn - organophosphate was synthesized for the first time. It is characterized by several physicochemical techniques. Small angle X-ray diffraction analysis shows the first peak in 2.5ºwith 39 Aº pore width. Elemental analysis shows that the composition is [(C12H23N)3PO]40Mn. Scanning electron microscopic picture shows the flag morphology with 1-15 µm particle size. Thermogravimetry/Differentaial thermal analysis shows almost 80% exothermic weight loss. Nitrogen adsorption isotherm shows type III with 300 m²/g BET surface area. Fourier transform Infrared spectroscopic analysis shows that the framework vibrations are comparable to other well known silica mesoporous materials. Electron spin resonance spectroscopic analysis shows the absence of hyperfine splitting indicates the presence of Mn3+ species. Ultraviolet - visible spectroscopic analysis shows that most of the Mn is in tetrahedral co-ordination beside small square pyramidal species. A plausible synthesis mechanism also proposed.
publishDate 2009
dc.date.none.fl_str_mv 2009-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392009000400006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392009000400006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392009000400006
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.12 n.4 2009
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
_version_ 1754212659320848384

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